Missed period on birth control

So I started taking birth control pills again in February (Yaz) because I had missed my January period and my doctor didn't want to take any risks, she had me take a pregnancy test which came out negative.
I've always had irregular periods and birth control has helped them become regular but Im late for my February period, is that normal? 
I'm still taking the pill and I'm still getting cramps and mood swings and everything but I'm not bleeding. Help please!

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors